Discovery of Biomarkers in Breath: Enhancing Separation and Identification using GC×GC–TOF MS

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This study describes the comprehensive, high-sensitivity screening of disease biomarkers, through use of sampling onto TD tubes, automated preconcentration, and GC×GC–TOF MS. Key advantages of the system described are enhanced separation of complex breath mixtures (including high-volatility species) using flow-modulated
GC×GC, high sensitivity through the use of trap-based focusing and an inherently sensitive detector, and confident identification of the most challenging species with Tandem Ionisation.

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